Astronomy:298 Baptistina
From HandWiki
 Asteroid 298 Baptistina (apparent magnitude 15.2) near a mag 15.3 star | |
| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery site | Nice, France |
| Discovery date | 9 September 1890 |
| Designations | |
| (298) Baptistina | |
| A890 RB | |
| Minor planet category | |
| Orbital characteristics[1] | |
| Epoch 21 November 2025 (JD 2461000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 123.99 years |
| |{{{apsis}}}|helion}} | 2.049 AU |
| |{{{apsis}}}|helion}} | 2.049 AU |
| 2.264 AU | |
| Eccentricity | 0.09513 |
| Orbital period | 3.407 years |
| Mean anomaly | 113.57° |
| Mean motion | 0° 17m 21.588s / day |
| Inclination | 6.279° |
| Longitude of ascending node | 8.112° |
| 134.99° | |
| Earth MOID | 1.065 AU |
| Jupiter MOID | 2.525 AU |
| TJupiter | 3.604 |
| Physical characteristics[1] | |
| Dimensions | 13–30 km (8.1–18.6 mi)[2][3] |
| Rotation period | 16.23±0.02 hours[3] |
| Geometric albedo | 0.131 |
| X-type | |
| Absolute magnitude (H) | 11.2 |
298 Baptistina is an asteroid orbiting in the asteroid belt. It is the namesake of the Baptistina family. It was discovered on 9 September 1890 by Auguste Charlois of Nice. The source of its name is unknown.[4] It measures about 13–30 km (8.1–18.6 mi) in diameter. Although it has an orbit similar to the Flora family asteroids,[5] it was once considered a possible source of the impactor that caused the extinction of the dinosaurs,[6] a possibility ruled out by the Wide-field Infrared Survey Explorer (WISE) in 2011.[7]
References
- ↑ 1.0 1.1 "298 Baptistina – JPL Small-Body Database Lookup". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=298.
- ↑ V. Reddy; M. S. P. Kelley; J. P. Emery (14–18 July 2008). "Composition of 298 Baptistina: Implications for K–T Impactor Link". Asteroids, Comets, Meteors. 1405. Baltimore, Maryland. http://www.lpi.usra.edu/meetings/acm2008/pdf/8243.pdf.
- ↑ 3.0 3.1 D. J. Majaess; D. Higgins; L. A. Molnar (2008). "New Constraints on the Asteroid 298 Baptistina, the Alleged Family Member of the K/T Impactor". Journal of the Royal Astronomical Society of Canada 103 (1): 7–10. Bibcode: 2009JRASC.103....7M.
- ↑ L. D. Schmadel (2003). Dictionary of Minor Planet Names. Springer Science & Business Media. p. 41. ISBN 978-3-540-00238-3. https://books.google.com/books?id=KWrB1jPCa8AC&pg=PA41.
- ↑ M. Florczak et al. (1998). "A Visible Spectroscopic Survey of the Flora Clan". Icarus 133 (2): 233–246. doi:10.1006/icar.1998.5928. Bibcode: 1998Icar..133..233F.
- ↑ W. F. Bottke; D. Vokrouhlický; D. Nesvorný (2007). "An asteroid breakup 160 Myr ago as the probable source of the K/T impactor". Nature 449 (7158): 48–53. doi:10.1038/nature06070. PMID 17805288. Bibcode: 2007Natur.449...48B.
- ↑ V. Reddy et al. (2011). "Mineralogical characterization of Baptistina Asteroid Family: Implications for K/T impactor source". Icarus 216 (1): 184–197. doi:10.1016/j.icarus.2011.08.027. Bibcode: 2011Icar..216..184R.
External links
- Lightcurve plot of 298 Baptistina[Usurped!], Palmer Divide Observatory, B. D. Warner (2009)
- Asteroid Lightcurve Database (LCDB), query form (info )
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)–(5000) – Minor Planet Center
- 298 Baptistina at AstDyS-2, Asteroids—Dynamic Site
- 298 Baptistina at the JPL Small-Body Database
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